California - Role: Building
| Madera County Courthouse |
| Madison House |
| Madison Park Apartments |
| Madulce Guard Station and Site |
| Magalia Community Church |
| Main Building |
| Main Post Office and Federal Building |
| Malabar Branch |
| Malaguerra Winery |
| Maloof, Sam and Alfreda, Compound |
| Manasse, Edward G., House |
| Manasse Mansion |
| Manchester Schoolhouse |
| Mansion House Hotel |
| Marengo Gardens |
| Marentis House |
| Marin County Civic Center |
| Marinship Machine Shop |
| Mariona |
| Mariposa County Courthouse |
| Mariposa County High School Auditorium |
| Mariposa Grove Museum |
| Marsh, G.T., and Sons |
| Marsh, John, House |
| Marsh, Martin Luther, House |
| Marston, George W., House |
| Martin Building |
| Martinez Canyon Rockhouse |
| Martinez City Library |
| Martinez Downtown Post Office |
| Martinez Grammar School Annex |
| Martin, Samuel, House |
| Masonic Temple |
| Masonic Temple |
| Masonic Temple |
| Masonic Temple and Lodge |
| Masonic Temple-Naval Lodge No. 87, Free and Accepted Masons |
| Masson, Paul, Mountain Winery |
| Mathews, Arthur C. and Judith, House |
| Matson Building and Annex |
| Maulbridge Apartments |
| Maulhardt, Gottfried, Farm |
| Maxfield Building |
| Maydestone Apartments |
| Mayfair Hotel |
| Maywood Woman's Club |
| McCallum, Roy D., House |
| McCarty Memorial Christian Church |
| McCauley and Meyer Barns |
| McCauley Cabin |
| McClatchy, C.K., Senior High School |
| McClintock Storage Warehouse |
| McCrea House |
| McCullagh-Jones House |
| McDonald, D. C., Building |
| McDonald Mansion |
| McElroy Octagon House |
| McFarlan, George, House |
| McGurk Cabin |
| McHenry Mansion |
| McMullen, John, House |
| McNally, Andrew, House |
| McNally's Windemere Ranch Headquarters |
| McNear, Erskine, B., House |
| Medico-Dental Building |
| Meek Mansion and Carriage House |
| Mello, Clarence and Mary, House |
| Melrose-Backs Neighborhood Houses |
| Melrose Baptist Church |
| Memorial Branch |
| Memorial Hall |
| Menlo Park Railroad Station |
| Merced County Courthouse |
| Merced County High School |
| Merced Grove Ranger Station |
| Merced Lake Ranger Station |
| Merced Theatre |
| Merchants National Bank of Sacramento |
| Merrill, Charles W., House |
| Merrill, Samuel, House |
| Merritt, Josiah, Adobe |
| Merrium Apartments |
| Merwin House |
| Mesick House |
| Methodist Episcopal Church at Half Moon Bay |
| Methodist Episcopal Church of Pescadero |
| Meux House |
| Middough Brothers-Insurance Exchange Building |
| Migliavacca House |
| Milano Hotel |
| Milbank, Isaac, House |
| Millard House |
| Miller and Herriott House |
| Miller, Grace Lewis, House |
| Miller Red Barn |
| Miller, Warren P., House |
| Million Dollar Theater |
| Mills Building and Tower |
| Mills Hall |
| Milpitas Grammar School |
Data from United States Park Service and Wikidata
